“Commissioner Roger Goodell today notified Gregg Williams and the Tennessee Titans that Williams’ contract with the Titans has been approved and that he has been reinstated," the NFL said in a statement.

Goodell cited several reasons for the reinstatement, which included Williams’ acknowledgement and accepting responsibility for his role in the Saints' bounty program.

The league also said he committed to "never again be involved in a pay-for-performance or bounty system, and his pledge to teach safe play and respect for the rules at all levels of the game."

According to the NFL, Williams must fully conform to league rules and will be subject to periodic monitoring.

Williams thanked Goodell for reinstating him back to the league, and he also apologized while taking "full responsibility" for his role in the New Orleans' bounty scandal.

Speaking at a news conference, Williams says he's here to work tirelessly for the Titans and to make a positive impact. He says he's grateful for the opportunity.

Last year, Williams was suspended for his role in the bounty program while he was with the Saints.

Williams started with the Titans (formerly the Oilers) in the 1990s. His time with the Tennessee team included four years as the defensive coordinator.